Suction cleaner



Dec. 21 1926. y 1,611,786

' A. A. sERvA SUCTION CLEANER Filed Oct. 15. 1921 2 Sheets-Sheet l Aliorzzecys Dec. 21 1926. y 1,611,786

A. A. SERVA sUGTIoN CLEANER Filed Octv l5. 1921 A 2 Sheets-Shea*J 2 -4 Ml .s

- Inventor 1 Y ddmder'a JM AVM Patented Dec. 21, 1926.

UNITED STATE-s 1,611,785 PATE1-IT OFFICE.

ADAM A. SERVA, F

CANTON, omo, assIoNOn TO THE UNITEDELECTBIQ COMPANY, or CANTON, Omo, A CORPORATION or OHIO.

SUCTION CLEANER.

Application iied October 15, 19'21. Serial No. 507,896.

The invention relates to air cleaners of the suction pe, for carpets, rugs, floors and the like; an the object of the improvement is to supplement the suction of air throughy the ca et or under the lips of the cleaner, by

a b ast of air acting upon the carpet or the surface of a Hoor, within the mouth of the cleaner.

Diiculty is Yexperienced in picking up threads, lint and other light, fluify articles,

by the pressure andvvolume of air usually lavailable in portable electric machines, and is is customary to supplement the same by the use of arotary brush operating in the mouth of the machine. The present invention involves the use of a suctiony fan and a separate smaller fan to produce a blast of air to impin e and scour the objective surface within tie` mouth of the cleaner, without the use of a brush and without materially modifying the suction action of the larger fan. The invention may be embodied in the various forms and arrangements of cleaners illustrated in the accompanying drawings,

' forming part hereof, in which:

Figure 1 shows a preferred arrangement of the fans below the motor case,- with the suction fan below and the blast fan above a common'partition; p

Fig. 2, an arran ement of the fans and an intervening air c amber case, with the suction fan above the blast fan, to reverse the direction .of the blast within the mouth of the machine; and

Fig. 3, a planview of the elongated mouth such as shown. in-Fig. 2.

Similar numerals' refer to similar parts throughout the drawing.

Referring to Figure 1, the machine ina cylindric extension 3 on its rear end, and a motor i centrali mounted thereon.

The motor spindle 5 extends downward into the fan case, and a blast fan 6 and a relatively larger suction fan 7 are secured thereto on opposite sides of a partition wall .nected to the rear end of the tube; the

below the motor.

cludes a fan case 1 formed with a trans versely elongated head 2 on its forward end,

e machine extending longitudi-` nally of the mouth, which terminates in an edge 11 within and adjacent and above the lane of the lips, thus dividing the mouth mto a forward transverse slot or channel 12 and a relativeliylflarger rear transverse slot or channel 13.; t e former channel communieating with the discharge outlet 14 of the blast. fan, and the latter channel 'communieating withthe inlet 15 of the suction fan.

A tubular wall 16I forms a channel 16 within theI rearward extension of the fan v casing, and communicates at one end with the outlet 17 of the suction fan and opens at `its other end into a pervious bag 18 conmouth of the tube being provided with a i suitable gate 19 to prevent the return of dust into the machine.'

A larger pervious bag 20 preferably sur-v rounds the'dust bag 18, and its mouth is con- 75 nected to the rear end of the cylindric extension 3 of the fan casing and communicatesthrough the same to the inlet 'Opening 21 of the blast fan. f

The blast fan .6 and the suction fan 7 are driven by the motor 4, andthe latter fan vcreates a suction in the mouth .9 of the ma- -I chine which draws the air either through the carpet orV under the lips 10 and 10 of the mouth; and the dust laden air is discharged into the dust bag 18, the air passing through the pervious wall thereof into the larger pervious bag 20.

At the same time the smaller blast fan draws air from the larger bag and discharges the same as a blast through the channel 12 in the head of the machine, and thence under the edge of the partition 11 therein to scour or. to sweep the objective surface, whence this air joins the larger current of air which is drawn through the larger channel 13 and the suction an.

The excess of air moved by the suction fan passes through the outer pervious bag 20, so that the air returned bythe blast fan does not break the vacuum or'suction created 'by the larger fan; and it is evident that the lcommunicates with the forward channel 12b in the header the machinewhich is'larger than the rear channel 13b communicating 110 with the clischnrge opening of the blast fun 6", so as to reverse the direction of the blast of nir passing under the edge 1lb oi" the single transverse partition wells ll" in the head. Otherwise the general arrangement and operation of the machine is the sanne-:1S shown and described for Figure l.

l claim: A v

1. A suction cleaner including a houd with an elongated mouth and contactlips, a, division within the mouth adjacent und above the plane of the lipsA forming slots onvopposite sides thereof, means for im peiling .a current of air into the mouth through one of the slots for sweeping an objective surface, and means impelling a greater volume of air from the mouth through the other slot for suction cleaning site sides thereof, un impeller discharging nir into themouth through one of the slots for sweeping the objective surface, u second stronger impeller drawing air from the bead through the other slot for suction cleaning through the mouth, u pcrvious dust lmp; intoV which the second'iinpeller discharges und upsecond pervious bag around the lirst bug communicating with the inlet of the first impellera 'ADAM A. SERV. 

